I have an older Traeger (before BT) and a Green Mountain Grills pellet smoker. My Traeger wasn't super accurate and the temp would swing more than I liked, so I called them up. After several calls of T/S, they sent me a new controller and it works a lot better now.
The Green Mt Grill was cheaper and has 2 probes that connect via wifi to your phone, greater range than BT and you can control everything from the phone or tablet. I bought it as a returned unit and it had a bad power supply and heat diffuser, they sent new ones out immediately. I did some temp accuracy testing and it was off by a lot, but once I moved the heat diffuser to the correct location, both probes were within 1 or 2* throughout the entire range and it had much tighter temp control than the Traeger. Both companies had great tech support, with Green Mt Grills sending new parts no questions asked but Traeger made me diagnose everything even though it's well known that the older model I had suffered from a primitive controller with wider than normal temp. swings.
If I had to choose one, I'd buy the Green Mt Grill again. I'd also recommend the insulation blanket for it. It's cheap and really helps maintain the desired temp and reduces pellet use by a huge amount.
The one thing about pellet smokers is they tend to dry food out, due to the blower. I always use a cookie sheet with a qt of water under the meat, it helps keep it moist and catches the drippings. A lot of people also swab it with a fruit juice or spritz it.